The relative rotation of the g-tensor (\(\Delta \theta \) ) of two adjacent chains
was also assumed to explain the EPR line broadening for \(T<T_{CO}\)  at lower
frequencies [1]}. However neither the rotation axis nor the
amplitude of the rotation is coherent with our results. The reason is that the
authors used the anisotropic Zeeman effect (AZE) [2]} in order to
extract quantitative information from the EPR linewidth . Unfortunately, this
model needs the interchain coupling \(J^{\prime }\)  and in the absence of a reliable value,
the authors estimated \(J^{\prime }\)  using [3]}, which, as we have
shown previously, is irrelevant in the case of (TMTTF)\(_2X\)  salts. Using
\(J^{\prime }=1.1\)  K and an enhanced linewidth of 1.5 G they found a large relative
rotation of \(\Delta \theta =\pm 32^\circ \)  about the \(b\)  axis. Now let's approach
the problem from the other side by using our direct measurement of \(\Delta \theta =\pm 4^\circ \)  about the \(a\)  axis which yields \(\Delta g\approx 2.10^{-4}\) ,
and the experimental results obtained in W band from [1]}
(\(\Delta H=1.5\)  G and \(H_0=3.36\)  T). Applying the the AZE model :
\(J^{\prime }= \sqrt{\pi /8}H_0^2|\Delta g|^2/(g_e\Delta H)\) 
